51374884722251 has 4 divisors (see below), whose sum is σ = 51682518762672. Its totient is φ = 51067250681832.

The previous prime is 51374884722241. The next prime is 51374884722281. The reversal of 51374884722251 is 15222748847315.

It is a happy number.

51374884722251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51374884722251 - 2²² = 51374880527947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51374884722241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153817019960 + ... + 153817020293.

It is an arithmetic number, because the mean of its divisors is an integer number (12920629690668).

Almost surely, 2^{51374884722251} is an apocalyptic number.

51374884722251 is a deficient number, since it is larger than the sum of its proper divisors (307634040421).

51374884722251 is a wasteful number, since it uses less digits than its factorization.

51374884722251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307634040420.

The product of its digits is 30105600, while the sum is 59.

The spelling of 51374884722251 in words is "fifty-one trillion, three hundred seventy-four billion, eight hundred eighty-four million, seven hundred twenty-two thousand, two hundred fifty-one".